Date
July 3, 2025, 11:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.420681] ================================================================== [ 21.421269] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 21.421475] Read of size 1 at addr fff00000c6de6500 by task kunit_try_catch/215 [ 21.421600] [ 21.422105] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 21.422334] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.422402] Hardware name: linux,dummy-virt (DT) [ 21.422480] Call trace: [ 21.422539] show_stack+0x20/0x38 (C) [ 21.423124] dump_stack_lvl+0x8c/0xd0 [ 21.423266] print_report+0x118/0x608 [ 21.423363] kasan_report+0xdc/0x128 [ 21.423439] __kasan_check_byte+0x54/0x70 [ 21.423524] kmem_cache_destroy+0x34/0x218 [ 21.423625] kmem_cache_double_destroy+0x174/0x300 [ 21.423722] kunit_try_run_case+0x170/0x3f0 [ 21.424523] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.425121] kthread+0x328/0x630 [ 21.425263] ret_from_fork+0x10/0x20 [ 21.425381] [ 21.425424] Allocated by task 215: [ 21.425488] kasan_save_stack+0x3c/0x68 [ 21.425686] kasan_save_track+0x20/0x40 [ 21.425740] kasan_save_alloc_info+0x40/0x58 [ 21.425782] __kasan_slab_alloc+0xa8/0xb0 [ 21.425858] kmem_cache_alloc_noprof+0x10c/0x398 [ 21.425948] __kmem_cache_create_args+0x178/0x280 [ 21.426108] kmem_cache_double_destroy+0xc0/0x300 [ 21.426204] kunit_try_run_case+0x170/0x3f0 [ 21.426287] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.426370] kthread+0x328/0x630 [ 21.426425] ret_from_fork+0x10/0x20 [ 21.426495] [ 21.426536] Freed by task 215: [ 21.426592] kasan_save_stack+0x3c/0x68 [ 21.426672] kasan_save_track+0x20/0x40 [ 21.426787] kasan_save_free_info+0x4c/0x78 [ 21.427063] __kasan_slab_free+0x6c/0x98 [ 21.427438] kmem_cache_free+0x260/0x468 [ 21.427577] slab_kmem_cache_release+0x38/0x50 [ 21.427770] kmem_cache_release+0x1c/0x30 [ 21.427880] kobject_put+0x17c/0x420 [ 21.428295] sysfs_slab_release+0x1c/0x30 [ 21.428855] kmem_cache_destroy+0x118/0x218 [ 21.429076] kmem_cache_double_destroy+0x128/0x300 [ 21.429617] kunit_try_run_case+0x170/0x3f0 [ 21.430201] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.430288] kthread+0x328/0x630 [ 21.430487] ret_from_fork+0x10/0x20 [ 21.430626] [ 21.430938] The buggy address belongs to the object at fff00000c6de6500 [ 21.430938] which belongs to the cache kmem_cache of size 208 [ 21.431091] The buggy address is located 0 bytes inside of [ 21.431091] freed 208-byte region [fff00000c6de6500, fff00000c6de65d0) [ 21.431217] [ 21.432099] The buggy address belongs to the physical page: [ 21.432246] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106de6 [ 21.432940] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.433102] page_type: f5(slab) [ 21.433722] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 21.434128] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 21.434284] page dumped because: kasan: bad access detected [ 21.434357] [ 21.434390] Memory state around the buggy address: [ 21.434816] fff00000c6de6400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.435188] fff00000c6de6480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.435380] >fff00000c6de6500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.435463] ^ [ 21.435527] fff00000c6de6580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 21.435629] fff00000c6de6600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.435719] ==================================================================
[ 12.380186] ================================================================== [ 12.380750] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.381108] Read of size 1 at addr ffff888100c16780 by task kunit_try_catch/232 [ 12.381418] [ 12.381514] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.381562] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.381574] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.381597] Call Trace: [ 12.381609] <TASK> [ 12.381627] dump_stack_lvl+0x73/0xb0 [ 12.381655] print_report+0xd1/0x650 [ 12.381678] ? __virt_addr_valid+0x1db/0x2d0 [ 12.381702] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.381725] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.381746] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.381771] kasan_report+0x141/0x180 [ 12.381792] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.381818] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.381842] __kasan_check_byte+0x3d/0x50 [ 12.381863] kmem_cache_destroy+0x25/0x1d0 [ 12.381887] kmem_cache_double_destroy+0x1bf/0x380 [ 12.381911] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.381934] ? finish_task_switch.isra.0+0x153/0x700 [ 12.381956] ? __switch_to+0x47/0xf50 [ 12.381984] ? __pfx_read_tsc+0x10/0x10 [ 12.382005] ? ktime_get_ts64+0x86/0x230 [ 12.382029] kunit_try_run_case+0x1a5/0x480 [ 12.382055] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.382076] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.382099] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.382137] ? __kthread_parkme+0x82/0x180 [ 12.382333] ? preempt_count_sub+0x50/0x80 [ 12.382356] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.382380] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.382446] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.382472] kthread+0x337/0x6f0 [ 12.382491] ? trace_preempt_on+0x20/0xc0 [ 12.382523] ? __pfx_kthread+0x10/0x10 [ 12.382542] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.382563] ? calculate_sigpending+0x7b/0xa0 [ 12.382587] ? __pfx_kthread+0x10/0x10 [ 12.382608] ret_from_fork+0x116/0x1d0 [ 12.382625] ? __pfx_kthread+0x10/0x10 [ 12.382645] ret_from_fork_asm+0x1a/0x30 [ 12.382674] </TASK> [ 12.382686] [ 12.392905] Allocated by task 232: [ 12.393051] kasan_save_stack+0x45/0x70 [ 12.393891] kasan_save_track+0x18/0x40 [ 12.394083] kasan_save_alloc_info+0x3b/0x50 [ 12.394437] __kasan_slab_alloc+0x91/0xa0 [ 12.394663] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.394854] __kmem_cache_create_args+0x169/0x240 [ 12.395079] kmem_cache_double_destroy+0xd5/0x380 [ 12.395326] kunit_try_run_case+0x1a5/0x480 [ 12.395600] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.395819] kthread+0x337/0x6f0 [ 12.395994] ret_from_fork+0x116/0x1d0 [ 12.396246] ret_from_fork_asm+0x1a/0x30 [ 12.396529] [ 12.396606] Freed by task 232: [ 12.396759] kasan_save_stack+0x45/0x70 [ 12.396920] kasan_save_track+0x18/0x40 [ 12.397099] kasan_save_free_info+0x3f/0x60 [ 12.397534] __kasan_slab_free+0x56/0x70 [ 12.397774] kmem_cache_free+0x249/0x420 [ 12.397909] slab_kmem_cache_release+0x2e/0x40 [ 12.398115] kmem_cache_release+0x16/0x20 [ 12.398401] kobject_put+0x181/0x450 [ 12.398576] sysfs_slab_release+0x16/0x20 [ 12.398881] kmem_cache_destroy+0xf0/0x1d0 [ 12.399083] kmem_cache_double_destroy+0x14e/0x380 [ 12.399299] kunit_try_run_case+0x1a5/0x480 [ 12.399570] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.399988] kthread+0x337/0x6f0 [ 12.400120] ret_from_fork+0x116/0x1d0 [ 12.400599] ret_from_fork_asm+0x1a/0x30 [ 12.400804] [ 12.400883] The buggy address belongs to the object at ffff888100c16780 [ 12.400883] which belongs to the cache kmem_cache of size 208 [ 12.402112] The buggy address is located 0 bytes inside of [ 12.402112] freed 208-byte region [ffff888100c16780, ffff888100c16850) [ 12.402855] [ 12.403058] The buggy address belongs to the physical page: [ 12.403311] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100c16 [ 12.403845] flags: 0x200000000000000(node=0|zone=2) [ 12.404070] page_type: f5(slab) [ 12.404541] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.404883] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.405630] page dumped because: kasan: bad access detected [ 12.405868] [ 12.405944] Memory state around the buggy address: [ 12.406459] ffff888100c16680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.406868] ffff888100c16700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.407367] >ffff888100c16780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.407811] ^ [ 12.407996] ffff888100c16800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.408602] ffff888100c16880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.408994] ==================================================================